The remains of the world’s oldest planned city may crumble to dust in twenty years if action isn’t taken, the Telegraph reports.

Mohenjodaro, a 5,000 year-old city in Pakistan, is under threat from extreme temperatures and monsoon rains, which leave deposits of salt on the unbaked clay bricks that were used to create its buildings. That salt leeches out any moisture in the bricks and slowly turns them to dust.

A crew of workmen is coating the ancient structures with salt-free mud, but there are far too few people on the job and very little money.

The Bronze Age city, which is a UNESCO World Heritage Site, was founded around 3,000 BC and shows a remarkable amount of urban planning. There were toilets in every house, separate water systems for drinking and sewage, roads laid out on a grid system, a large communal bath shown in the above photo, and a communal granary. It was the center of the Indus Valley civilization and traded as far away as Mesopotamia, using a set of standardized weights and measures to regulate commerce.

UNESCO officials met with Pakistani archaeologists last week to draw up a plan to save the site, which includes burying some of the most threatened structures. It remains to be seen whether Pakistan’s government, strapped for cash and stuck in a grueling war with the Taliban, will foot the bill.

I visited Mohenjodaro back in 1994 when Pakistan was safer to visit than it is now and found the place to be enchanting. The layout can be clearly seen and it almost feels like you’re in a living city. It would be a shame if such a landmark of human development disappeared.

Cave paintings at the Altxerri cave system in the Basque region of northern Spain are about 39,000 years old, making them some of the oldest in Europe, Popular Archaeology reports.

A team of French and Spanish scientists analyzed the paintings, which include images such as the bison shown here, as well as finger marks, a feline, a bear, an unidentified animal head and more abstract markings. This early dating of these images puts them in the Aurignacian Period, believed by most archaeologists to be the first flowering of modern humans in the region, although whether or not there were still Neanderthals in the area at this time is an open question.

A later set of paintings in another part of the cave system, which has been designated a UNESCO World Heritage Site, date from “only” 29,000-35,000 years ago.

By comparison, the art at Cauvet Cave in France is about 31,000 years old, although it is of a much higher quality. The beautiful paintings there were the subject of Herzog’s breathtaking 3D documentary Cave of Forgotten Dreams.

Stonehenge is the world’s most iconic prehistoric monument. Scientists have argued about its significance for generations, but few have been allowed to excavate there. Archaeologist Mike Parker Pearson is one of those lucky few, and he’s documented his finds in a new book.

Stonehenge: A New Understanding chronicles a seven-year excavation of Stonehenge and the surrounding countryside.

Pearson and his team took an innovative approach and came up with some innovative interpretations. Instead of looking at Stonehenge as an isolated monument, they studied the landscape and other prehistoric monuments around it. This led them to determine that Stonehenge was part of a ritualistic network of monuments and natural features.

But what was it all for? Pearson believes that despite the astronomical alignments and the regular meetings of people at Stonehenge, it was not a monument to nature or the seasons or fertility as many archaeologists have concluded, but rather a monument to the dead, similar to other enclosed cremations burial grounds in the British Isles. Other constructions nearby were symbols of life and were intimately connected to Stonehenge just as the concepts of life and death are intimately connected with each other.

The main connection is with a site called Durrington Walls, two miles away from Stonehenge. Both had avenues leading to a nearby river. Durrington Walls, however, had a settlement while Stonehenge only had burials. Natural features in the landscape aligned with important astronomical events, making the location of Stonehenge perfect for any monument concerned with the heavens.

Weighing in at 350 dense pages, this is not for the casually interested reader. Luckily Pearson has a clear writing style, avoids getting overly technical, and the book is richly illustrated with maps and photographs that help the reader follow the text. I would suggest this to anyone with a serious interest in archaeology and science.

I had the good fortune to hear Dr. Pearson talk a few years ago to a packed auditorium at Oxford University. Once he was done, Oxford professors gathered around in their self-important way to talk with this leading scientist. Before they could start posturing, a twelve-year-old girl came up to him and chirped, “I want to be an archaeologist!”

Dr. Pearson could have patted her on the head, replied, “That’s nice darling” and gone on to speak with the professors, but he didn’t. Instead he sat her down and spoke with her for a good five minutes about what she needed to do to become an archaeologist and all the fun she could have in that career.

The professors looked ruffled and impatient. The girl left glowing with enthusiasm.

On Saturday, UNESCO’s World Heritage Committee announced this year’s newly inscribed locations to their list of World Heritage Sites from their 37th session in Cambodia. Each year, the UN agency evaluates the most culturally and naturally significant sites that have been proposed to them from countries around the world. Then, they elect the most outstanding to be put on their renowned list.

This year sees Japan‘s iconic Mount Fuji added to the list after previous nomination attempts were rejected due to garbage disposal problems on the summit as well as a perceived lack of uniqueness of the mountain. Japan successfully lobbied for the stratovolcano to be included this year due to the incredibly prominent role it has played in Japanese history, religion and art. One of the most famous Japanese works of art, “The Great Wave,” features the beautifully shaped mountain in the background. The woodblock print even comes from a series named “Thirty-six Views of Mount Fuji.” Today, Fuji-san has come to represent Japan as a whole.Also added to the World Heritage List this year was China‘s gorgeous Honghe Hani Rice Terraces, which have been continuously cultivated for over 1,300 years. Located in Southern Yunnan, the rice terraces cover more than 64 square miles of farmland, where many of the locals still live a very traditional life, living in thatched huts and small villages.

The nations of Qatar and Fiji received their first ever World Heritage Site inscriptions this year. Al Zubarah, a walled fort town in Qatar, was a successful trade post before it was abandoned at the turn of the 20th century. In the years since, much of the site has been covered in sand blown in from the desert, helping to preserve it. Fiji’s Levuka Historical Port Town has been inscribed after more than 25 years of lobbying by their government. The port town was Fiji’s first colonial capital and received strong architectural influences from both it’s British colonial rulers as well as from its own indigenous culture.

In total this year, 19 sites were added to the World Heritage List, from countries in almost every corner of the globe, with the possibility of even more to be announced before the session ends on June 27. Sites that have been given designation by UNESCO receive increased protection under international law, funds for further preservation as well as greater public awareness and tourism. There are presently 962 World Heritage Sites in 157 countries. Other sites include Yellowstone National Park, the Pyramids of Giza, Uluru in Australia and the Darjeeling Railway in India.

This past Sunday, the United Nations Educational, Scientific and Cultural Organization (UNESCO) kicked off its annual conference in Phnom Penh, Cambodia. Over the next ten days, the 1300 delegates in attendance will discuss which new locations from around the globe deserve possible inclusion on its exclusive list of World Heritage Sites. Some of the candidates include Japan’s Mt. Fuji, the Namib Desert in southern Africa and a series of wooden Orthodox churches located in the Carpathian mountains of Poland and the Ukraine.

Attendees at the conference will also consider adding the Great Barrier Reef, located off the coast of Australia, to its list of endangered places. The organization routinely reviews the World Heritage Sites and will sometimes call attention to those that it sees as being under threat. This is done in an effort to raise awareness of the possible issues facing those place in the hopes that something will be done to preserve the site before it suffer irreparable damage. Studies have shown that tropical storms, climate change and increased shipping traffic have all had an impact on the health of the reef, bring its future into question. UNESCO is hoping that their discussion of those threats will send a message to Australians that they need to take action to preserve this amazing place.Having visited the GBR myself a few years back, I can tell you that it lives up to is reputation as a spectacular ocean setting. It is amongst the most beautiful places that I have ever seen and the snorkeling and scuba diving there are second to none. During my time there, it was clear that Australians understood that it is a very special place and that they are taking steps to ensure that it stays protected, healthy and vibrant for future generations to enjoy as well. That was something that was underscored in the recent “Reef Live” event, which took place in celebration of World Oceans Day. During that event, thousands of people from around the globe were able to catch a glimpse of the reef through a live tour that was broadcast over the Internet.

Immediately following “Reef Live,” Qantas Airlines announced discounted airfares to Queensland, making it more affordable than ever to head Down Under. Additionally, About Australia is offering some excellent discounted adventure travel package for those looking to visit Cairns and the Great Barrier Reef region. For instance, they are currently offering a seven-day/five-night package that includes airfare from Lost Angles and accommodations at the Pacific International Hotel for just $2145/person. Amongst the included activities are a cruise on the GBR, snorkeling tours, a visit to the nearby rainforest and much more. They even have some great opportunities for scuba divers too. These discounted tours are available for travel in November of this year and February of next. Booking must be made by June 24 to take advantage of these savings.

This is an opportunity to visit one of the most spectacular places on the planet at an unbelievable savings. The Great Barrier Reef is a destination that all travelers should have on their list with the understanding that travel there is handled safely and sustainably so as to protect this fragile, yet incredibly beautiful ecosystem.